The Republican Party is once again in the midst of an internal battle. This time it's being led this time by former White House strategist Steve Bannon. He is threatening to challenge incumbent members of Congress in order to assert a brand of conservatism that has caused headaches for the GOP for the past decade.It's the latest in a struggle over ideas and direction of the Republican Party. It's pitting the former aide to President Donald Trump against establishment leaders like Senate Majority Leader Mitch McConnell and House Speaker Paul Ryan. And it is forcing Trump to choose sides. On the one hand are insurgent candidates praising his name. On the other incumbents being painted as creatures of the swamp he pledged to drain.nbcnews.com/politics/politics-news/gop-f...wochit.com